<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Airline - ECHARTS-GL</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
    <link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../node_modules/echarts/map/js/world.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="js/commonUI.js"></script>
<script>
    var chart = echarts.init(document.getElementById('main'));

    $.getJSON('data/flights2.json', function (data) {
        // Airport: [name, city, country, longitude, latitude]
        function getAirportCoord(idx) {
            return [data.airports[idx][3], data.airports[idx][4]];
        }

        var routes = data.routes.map(function (airline) {
            return [
                getAirportCoord(airline[1]),
                getAirportCoord(airline[2])
            ];
        });

        chart.setOption({
            progressiveStep: 5000,
            backgroundColor: '#003',
            geo: {
                map: 'world',
                left: 0,
                right: 0,
                silent: true,
                roam: true,
                itemStyle: {
                    normal: {
                        borderColor: '#003',
                        color: '#005'
                    }
                }
            },
            series: [{
                type: 'linesGL',

                coordinateSystem: 'geo',

                blendMode: 'lighter',

                data: routes,

                lineStyle: {
                    curveness: 0.2,
                    opacity: 0.05
                }
            }]
        });

        window.onresize = chart.resize;

    });
</script>
</body>
</html>
